Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Vapor liquid equilibrium data for the nitrogen + n-octane system from (344.5 to 543.5)K and at pressures up to 50MPa

Eliosa-Jimenez, G.[Gaudencio], Garcia-Sanchez, F.[Fernando], Silva-Oliver, G.[Guadalupe], Macias-Salinas, R.[Ricardo]
Fluid Phase Equilib. 2009, 282, 1, 3-10
ABSTRACT
A static-analytical apparatus with visual sapphire windows and pneumatic capillary samplers has been used to obtain newvapor liquid equilibrium data for theN2 + n-octane systemover the temperature range from (344.5 to 543.5)K and at pressures up to 50MPa. Equilibrium phase compositions and vapor liquid equilibrium ratios are reported. The new results were compared with solubility data reported by other authors. The comparison showed that the solubility data reported in this work at 344.5K are in good agreement with those determined by others at 344.3 K. The experimental data were modeled with the PR and PC-SAFT equations of state by using one-fluid mixing rules and a single temperature-independent interaction parameter. Results from the modeling effort showed that the PC-SAFT equation was superior to the PR equation in correlating the experimental data of the N2 + n-octane system.
Compounds
# Formula Name
1 N2 nitrogen
2 C8H18 octane
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 2
  • 1
  • Critical pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • Polynomial fitting of K-p data
  • 5
  • POMD
  • 2
  • 1
  • Critical temperature, K ; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • Polynomial fitting of K-p data
  • 5
  • POMD
  • 2
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 73
  • POMD
  • 2
  • 1
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • Chromatography
  • 78